Alert archive / South Carolina / Freeze Watches in 2011
Freeze Watch 1, NWS Columbia, SC
NWS Columbia, SC issued this freeze watch at Mar 28, 2011, 3:41 AM EDT for 4 counties in South Carolina. It took effect at Mar 29, 2011, 2:00 AM EDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Mar 28, 2011, 3:41 AM EDT (07:41 UTC)
- In effect from
- Mar 29, 2011, 2:00 AM EDT
- Expired
- Mar 28, 2011, 2:58 PM EDT
- In force
- Issued by
- NWS Columbia, SC
Counties Chesterfield County, SC, Fairfield County, SC, Kershaw County, SC, Lee County, SC
The radar
The Columbia radar (KCAE), 73 km from the middle of the area, began a volume at 07:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 7.7 hours before the alert went out and 197 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 645 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- -130 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 2:58 PM EDT | Freeze Warning | CAE | Chesterfield, Fairfield, Kershaw, Lee | 18 hr |
Nearby
Freeze Watches in South Carolina, 2011Every freeze watch in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.